:root {
  --bg: #f4f6f9;
  --bg-accent: #e9eef5;
  --card: #ffffff;
  --text: #111827;
  --muted: #5b6472;
  --primary: #0f3d5e;
  --primary-soft: #e2edf7;
  --secondary: #0d9488;
  --border: #d9e1ea;
  --warning: #c2410c;
  --shadow: 0 20px 40px rgba(15, 61, 94, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top left, #ffffff 0%, var(--bg) 50%, var(--bg-accent) 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(transparent 0 98%, rgba(15, 61, 94, 0.06) 98% 100%),
    linear-gradient(90deg, transparent 0 98%, rgba(15, 61, 94, 0.04) 98% 100%);
  background-size: 48px 48px;
  opacity: 0.4;
  pointer-events: none;
}

.app-shell {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 60px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), #1b6aa5);
  color: white;
  font-weight: 700;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
}

.brand-title {
  margin: 0;
  font-weight: 600;
}

.brand-sub {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card {
  background: var(--card);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
}

.chip.alert {
  background: #fde8d9;
  color: var(--warning);
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 8px 20px rgba(15, 61, 94, 0.2);
}

.btn.secondary {
  background: var(--secondary);
  color: white;
}

.btn.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn:hover {
  transform: translateY(-1px);
}

.link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.muted {
  color: var(--muted);
}

.login-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.login-card h1 {
  margin-top: 0;
}

.form-grid {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.form-grid label {
  display: grid;
  gap: 6px;
  font-weight: 600;
  color: var(--text);
}

.form-grid input,
.form-grid select,
.form-grid textarea {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 0.95rem;
  background: #fdfdfd;
}

.login-actions {
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-card {
  display: grid;
  gap: 18px;
  background: linear-gradient(160deg, rgba(15, 61, 94, 0.95), rgba(13, 148, 136, 0.85));
  color: white;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.stat {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 12px;
}

.stat-value {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
}

.stat-label {
  margin: 4px 0 0;
  font-size: 0.85rem;
}

.hero-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 16px;
}

.page-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.filters {
  display: flex;
  gap: 8px;
}

.filters input,
.filters select {
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 8px 10px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.product-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  display: grid;
  gap: 8px;
  background: #fbfcfe;
}

.product-card h3 {
  margin: 0;
  font-size: 1rem;
}

.product-meta {
  font-size: 0.85rem;
  color: var(--muted);
}

.price {
  font-weight: 700;
}

.side-stack {
  display: grid;
  gap: 24px;
}

.cart-list {
  display: grid;
  gap: 12px;
  max-height: 320px;
  overflow: auto;
}

.cart-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
}

.cart-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cart-summary {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
  display: grid;
  gap: 6px;
  font-weight: 600;
}

.admin-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.kpi {
  background: #f7fafc;
  border-radius: 14px;
  padding: 16px;
  border: 1px solid var(--border);
}

.kpi-value {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
}

.kpi-label {
  margin: 6px 0 0;
  color: var(--muted);
}

.table {
  display: grid;
  gap: 8px;
}

.table-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr 1fr;
  gap: 8px;
  align-items: center;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.table-row.header {
  background: #f7fafc;
  font-weight: 600;
}

.alert-list {
  display: grid;
  gap: 10px;
}

.alert-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff7ed;
}

.customer-list {
  display: grid;
  gap: 10px;
}

.customer-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 12px;
  background: #fbfcfe;
}

.customer-name {
  margin: 0;
  font-weight: 600;
}

.reveal {
  animation: fadeUp 0.6s ease both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1100px) {
  .login-layout,
  .page-grid,
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-note {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .filters {
    flex-direction: column;
    align-items: stretch;
  }

  .table-row {
    grid-template-columns: 1fr 1fr;
    row-gap: 6px;
  }
}